package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "C端-菜品浏览接口")
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 根据分类id查询菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")

    public Result<List<DishVO>> list(Long categoryId) {
        //缓存优化：查询数据库之前先查Redis缓存，判断是否有数据，有则直接返回数据
        List<DishVO> voList = (List<DishVO>) redisTemplate.opsForValue().get("dish_" + categoryId);
        if (voList!=null|| !voList.isEmpty()) {
            return Result.success(voList);
        }
        //没有缓存数据，则查询mysql数据库
        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);//查询起售中的菜品

        voList = dishService.listWithFlavor(dish);
        //缓存优化：需要将数据库查询到大数据储存到redis缓存中
        redisTemplate.opsForValue().set("dish_" + categoryId, voList);
        return Result.success(voList);
    }

}
